--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/themeinstaller/source/src/com/nokia/tools/themeinstaller/installationmanager/Lock.java	Wed Sep 01 12:32:13 2010 +0100
@@ -0,0 +1,58 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Helper class for waiting asynchronous operations.
+ *
+*/
+
+
+package com.nokia.tools.themeinstaller.installationmanager;
+
+/**
+ * Helper class for waiting asynchronous operations.
+ */
+public class Lock
+    {
+
+    private boolean iNotify = false;
+
+    /*
+     * Calls wait() if unLock() hasn't been called.
+     * Causes thread to wait until unLock() is called.
+     */
+    synchronized public void lock()
+        {
+        if( !iNotify )
+            {
+            try
+                {
+                wait();
+                }
+            catch ( InterruptedException e )
+                {
+                //ignore
+                }
+            }
+        iNotify = false;
+        }
+
+    /*
+     * Called when asynchronous operation is ready.
+     * Wakes up a thread that is waiting on this object's monitor.
+     */
+    synchronized public void unLock()
+        {
+        iNotify = true;
+        notify();
+        }
+    }